V1.4 12 of 22 04/01/2009
Changing Rotation
Looking at the pump from the shaft end with the ports up, locate the short vent plug
(painted red). This is the suction (inlet) side of the pump. If on the right, rotation is
clockwise; if on the left, counterclockwise. On the opposite side is a long vent plug.
Remove both plugs and
interchange locations.
Location of short vent
plug for counterclockwise
rotation.
If outfitted with an internal relief valve (model C1GV), the rotation cannot be changed in
the field unless the cover/valve assembly is also replaced.
To change the location of the suction port on pumps supplied with Tuthill's unique
automatic reversing feature (model RC1G), the following must be done in addition to the
steps above:
• Remove the cover screws.
• Rotate the cover 180° so that the boss on the cover points to the new suction
(inlet) port.
• Align the mounting holes and reinstall the cover screws.
Models C1E, C1EN, CIF and C1FA
Seal Replacement - Models C1E, C1EN and C1F
• Grip the pump firmly across the ports and opposite side of the housing in a vise
with the shaft end up.
• For model C1EN only: Note the location of the red vent plug. This is the suction
(inlet) side of the pump. Loosen the setscrew on the collar of the outboard ball
bearing. While holding the pump shaft steady, turn the collar away from the red
vent plug to loosen it. Remove the collar from the shaft.
• Remove the three screws and slide the seal housing cap assembly off the shaft.
• Pry the seal from the housing cap and clean out the seal cavity with a cloth.
Press the new seal into the housing cap with the lip spring side facing the
mounting face.
• Inspect the shaft. If badly scored at the seal area, the rotor must be replaced.
Carefully remove any sharp edges from the shaft and polish with crocus cloth or
very fine sandpaper. This will eliminate possible damage to the seal lip and ease
installation.
• Install new gasket into bracket if necessary.
Location of short vent plug
for clockwise rotation.
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